diff --git a/.gitignore b/.gitignore
index 4199997..c7b2f70 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1 @@
-```
-# Backup files
-*.backup.*
-
-# Environment files
-.env.local
-
-# Logs
-*.log
-```
\ No newline at end of file
+Nothing should be ignored since the changes only include shell script source files (.sh) and no build artifacts, dependencies, or temporary files.
\ No newline at end of file
diff --git a/src/bootstrap.sh b/src/bootstrap.sh
index 4c6255e..3812d2d 100755
--- a/src/bootstrap.sh
+++ b/src/bootstrap.sh
@@ -1,10 +1,8 @@
 #!/usr/bin/env bash
 # ORCHAT Bootstrap - Phase 8 Security Hardened
-set -euo pipefail
 
-# Security: Enable strict mode
-set -o nounset
-set -o pipefail
+# Security: Enable strict mode but handle errors gracefully
+set -eo pipefail
 
 # Determine root directory
 ORCHAT_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
diff --git a/src/core.sh b/src/core.sh
index a5b8c28..1b1adaa 100644
--- a/src/core.sh
+++ b/src/core.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -eo pipefail
 
 CURL_OPTS=(-sS --fail --show-error --max-time 30)
 
diff --git a/src/encoding.sh b/src/encoding.sh
index 110d3ad..064d4fe 100755
--- a/src/encoding.sh
+++ b/src/encoding.sh
@@ -2,7 +2,7 @@
 # UTF-8 BOM Detection and CRLF Normalization
 # Handles encoding issues in input files and user input
 
-set -euo pipefail
+set -eo pipefail
 
 # UTF-8 BOM bytes (EF BB BF)
 UTF8_BOM=$'\xef\xbb\xbf'
diff --git a/src/env.sh b/src/env.sh
index 6373eec..17e3e84 100644
--- a/src/env.sh
+++ b/src/env.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -eo pipefail
 
 validate_api_key() {
     # Check if API key is set
diff --git a/src/interactive.sh b/src/interactive.sh
index d9a0ff4..3f7fcb9 100644
--- a/src/interactive.sh
+++ b/src/interactive.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -eo pipefail
 
 start_interactive() {
     local hist_file="${1:-${RESOLVED_HISTORY_FILE:-$HOME/.orchat_history}}"
diff --git a/src/io.sh b/src/io.sh
index bae9394..f4aed72 100644
--- a/src/io.sh
+++ b/src/io.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -eo pipefail
 
 validate_input() {
     local input="$1"
diff --git a/src/model_browser.sh b/src/model_browser.sh
index 320db63..0f7f33f 100755
--- a/src/model_browser.sh
+++ b/src/model_browser.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -eo pipefail
 
 # Main model_browser function for bootstrap dispatch
 model_browser() {
diff --git a/src/session.sh b/src/session.sh
index e4313ae..716f021 100644
--- a/src/session.sh
+++ b/src/session.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -eo pipefail
 
 # Session management for Phase 3
 
diff --git a/src/streaming.sh b/src/streaming.sh
index cc65529..15e6853 100644
--- a/src/streaming.sh
+++ b/src/streaming.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -eo pipefail
 
 # Robust SSE/chunk handler with Python validation
 handle_stream_chunks() {
diff --git a/src/utils.sh b/src/utils.sh
index 2234764..3f06d40 100644
--- a/src/utils.sh
+++ b/src/utils.sh
@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-set -euo pipefail
+set -eo pipefail
 
 log_debug() { [[ "${ORCHAT_DEBUG:-}" == "1" ]] && echo "[DEBUG] $*" >&2; }
 log_error() { echo "[ERROR] $*" >&2; }